CN208351782U - Convenient for adjusting the Objective model eye of vertex lens power - Google Patents
Convenient for adjusting the Objective model eye of vertex lens power Download PDFInfo
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- CN208351782U CN208351782U CN201721744849.5U CN201721744849U CN208351782U CN 208351782 U CN208351782 U CN 208351782U CN 201721744849 U CN201721744849 U CN 201721744849U CN 208351782 U CN208351782 U CN 208351782U
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Abstract
The utility model relates to the Objective model eyes convenient for adjusting vertex lens power, comprising: pedestal is equipped with plano-convex lens, diffuse reflecting screen in parallel from front to back thereon, is equipped with aperture diaphragm in front of plano-convex lens；Regulating device is mounted in pedestal, for adjusting the distance between diffuse reflecting screen and plano-convex lens.The diffuse reflecting screen is equivalent to retina, and plano-convex lens are equivalent to the dioptric system of human eye, and aperture diaphragm is equivalent to the pupil of human eye, and diffuse reflecting screen is equivalent to axiallength at a distance from plano-convex lens.The utility model adjusts the distance between diffuse reflecting screen and plano-convex lens by regulating device directly to adjust the size of vertex lens power, carries out vertex lens power adjustment by the standard equipment of different vertex lens powers compared with the prior art, using more convenient.
Description
Technical field
The utility model relates to medical instruments fields, and in particular to convenient for adjusting the Objective model eye of vertex lens power.
Background technique
It include now by 0 D, ± 2.5 D, ± 5 D, ± 10 by the Objective model eye that China National Measuring Science Research Inst. develops
A set of totally 11 Objective model eyes of D, ± 15 D, ± 20 D, namely the vertex lens power at multiple intervals is taken to make multiple standards
Material, if Objective model eye range is more than above-mentioned vertex lens power range or wants to measure multiple and different vertex lens powers, this set simulated eye
It is unable to satisfy above-mentioned requirements；This set simulated eye is multiple independent Objective model eyes, they can not be integrated
Using or carry, it is more scattered, be easy to lose, it is also inconvenient to carry；And the simulated eye of China National Measuring Science Research Inst. is existing external
Quotation is more than 40,000 RMB, and price is higher.
Utility model content
In order to overcome the drawbacks of the prior art, the utility model provides a kind of objective type simulation convenient for adjusting vertex lens power
Eye, can directly adjust vertex lens power size, convenience is good.
For above-mentioned purpose, the utility model is solved in this way: the Objective model eye convenient for adjusting vertex lens power,
Include:
Pedestal is equipped with plano-convex lens, diffuse reflecting screen in parallel from front to back thereon, is equipped with aperture in front of plano-convex lens
Diaphragm；
Regulating device is mounted in pedestal, for adjusting the distance between diffuse reflecting screen and plano-convex lens.
The diffuse reflecting screen is equivalent to retina, and plano-convex lens are equivalent to the dioptric system of human eye, and aperture diaphragm is equivalent to
The pupil of human eye, diffuse reflecting screen are equivalent to axiallength at a distance from plano-convex lens.The utility model is adjusted by regulating device
The distance between diffuse reflecting screen and plano-convex lens directly adjust the size of vertex lens power, pass through different top coke compared with the prior art
The standard equipment of degree carries out vertex lens power adjustment, using more convenient.
Further, the regulating device is used to adjust the position of diffuse reflecting screen or plano-convex lens.Adjust diffuse reflecting screen or
The position of plano-convex lens can be used to adjust the distance between diffuse reflecting screen and plano-convex lens, achieve the effect that facilitate adjusting.
Further, the plano-convex lens, diffuse reflecting screen pass through first support, second support installation on the base respectively,
Regulating device adjusts the distance between diffuse reflecting screen and plano-convex lens by adjusting the position of first support or second support.
Further, it is additionally provided on the pedestal with graduated guide rail, the regulating device is for adjusting first
Frame or second support move on guide rail.Diffuse reflecting screen between plano-convex lens at a distance from can be measured by scale, therefore can also
Corresponding vertex lens power is obtained by measuring the distance obtained to facilitate.
Further, it moves, is then set in first support on guide rail when the regulating device is used to adjust first support
Set auxiliary scale；It is moved on guide rail when the regulating device is used to adjust second support, then auxiliary scale is set on the secondary support bracket；To lead
Scale on rail is main scale, and cooperation auxiliary scale forms vernier caliper structure.Setting helps to further increase measurement accuracy in this way.
Further, the first support and/or second support are three-dimensional adjustable shelf.To make plano-convex lens and diffusing reflection
Screen has good space multistory three-dimensional regulation effect.
Further, the expansion lens hanger for placing plano-convex lens is also equipped in front of aperture diaphragm.Expand mirror
The trial lenses group of different vertex lens powers can be placed on horse to expand bigger concave-sphere vertex lens power range, strong applicability is accomplished
Only need one simulated eye of the utility model that can replace existing multiple standard simulation eye equipment, cost drops while being convenient for carrying
It is low.
Further, the regulating device includes turntable and the rotating member that connect with turntable, and rotating member is mounted on pedestal
In, rotating member is equipped with the first helicitic texture, and corresponding first support or second support are equipped with mutually nibbles with the first helicitic texture
The second helicitic texture closed.By turntable rotary motion part, turned by the first helicitic texture and the intermeshing of the second helicitic texture
It is dynamic, so that first support or second support move forward or back.
Compared with the prior art, the utility model has the beneficial effects that: realizing simulated eye top coke by regulating device
Spend it is adjustable, be further provided with vernier caliper structure improve measurement accuracy, expand lens hanger improve measuring range, therefore, this reality
It is easy to carry about with one with novel with adjusting is facilitated, the high feature of measurement accuracy.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the schematic diagram of the utility model main scale and auxiliary scale.
Specific embodiment
The utility model is described in detail with attached drawing combined with specific embodiments below.
A kind of Objective model eye convenient for adjusting vertex lens power as shown in Figure 1, comprising:
Pedestal 10 is equipped with plano-convex lens 1, diffusing reflection by first support 4, second support 6 thereon from front to back in parallel
Screen 5；In the front of first support 4, it is equipped with expands lens hanger 2 and aperture diaphragm 3 from front to back；Band is additionally provided on pedestal 10 to carve
The guide rail 7 of degree, second support 6 are mounted in guide rail 7；
Regulating device, including turntable 13, the rotating member connecting with turntable 13 14, rotating member 14 is mounted in pedestal 10, is turned
Moving part 14 is equipped with the first helicitic texture 9, and the lower end of second support 6 is equipped with the second screw thread being meshed with the first helicitic texture 9
Structure 8.
Auxiliary scale 12 is set in the second support；Using the scale on guide rail 7 as main scale 11, cooperation auxiliary scale 12 forms vernier calliper
Ruler structure.
The first support 4 and second support 6 are three-dimensional adjustable shelf, so that it is good to have plano-convex lens and diffuse reflecting screen
Good space multistory three-dimensional regulation effect.
In specific implementation process, plano-convex lens 1 are the lens that a focal length f is 40 mm, are equivalent to the dioptric system of human eye,
By optical glass manufacture of the Abbe number ν between 58~60, optical surface answers optical polish to handle, other surfaces should clean but
Processing that can be rough；The diameter of 3 loophole of aperture diaphragm is 4mm, is equivalent to the pupil of human eye；The long 49mm of auxiliary scale.
The corresponding relationship of simulated eye vertex lens power D and diffuse reflecting screen between plano-convex lens distance d is as shown in the table:
| Simulated eye concave-sphere vertex lens power D | Diffuse reflecting screen and plano-convex lens distance d |
| -5 | 0.05 |
| -4 | 0.047619048 |
| -3 | 0.045454545 |
| -2 | 0.043478261 |
| -1 | 0.041666667 |
| 0 | 0.04 |
| 1 | 0.038461538 |
| 2 | 0.037037037 |
| 3 | 0.035714286 |
| 4 | 0.034482759 |
| 5 | 0.033333333 |
To realize that -5D~+5D concave-sphere vertex lens power changes known to from upper table, the mobile range △ d of second support needs=
0.05m-0.03333m=0.01667m=16.67mm, therefore the position for making simulated eye vertex lens power 0D need to be only determined on guide rail 7
Afterwards, main scale is arranged on the position 0D of guide rail 7.The lookup method of determination of the position 0D of guide rail 7 is following steps:
S1, the vertex lens power developed first by China National Measuring Science Research Inst. are the Objective model eye of 0D to ensure one
Whether the 0D reading of objective type optometry unit is accurate, and it is objective to find this specifically repeatedly can to measure and measure the mode of uncertainty
The accurate 0D reading of formula optometry unit；
S2, simulated eye in the present embodiment is measured by this optometry unit again, makes diffuse reflecting screen 5 by rotating turntable 13
It is moved along guide rail 7, the accurate location that simulated eye vertex lens power is 0D is found by the accurate 0D reading of optometry unit.
Main scale further contemplates auxiliary scale overall length itself to the youthful and the elderly 11mm at the front of 0D to the youthful and the elderly 9mm, the rear of 0D
49mm, therefore main scale adds 49mm on the basis of 0D anterior-posterior length is at least above-mentioned, therefore main scale is to the youthful and the elderly 69mm.Partial enlargement
Afterwards as shown in Figure 2: the minimum indexing of main scale is 1mm, there is 50 small evenly divideds in auxiliary scale, and the overall length of auxiliary scale is equal to 49mm,
Therefore every one division of vernier scale differs 0.02mm with the minimum indexing of main scale.
The working principle of the utility model are as follows:
When measurement, by 13 rotary motion part 14 of turntable, mutually nibbled by the first helicitic texture 9 and the second helicitic texture 8
Close rotation so that second support 6 along guide rail 7 move forward or back, between conveniently adjusted first support 4 and second support 6 away from
From, namely facilitate and adjust the distance between plano-convex lens 1 and diffuse reflecting screen 5, achieve the effect that facilitate adjusting vertex lens power, while benefit
With the principle of vernier caliper, by main scale 11 and the cooperation of auxiliary scale 12 read second support 6 on guide rail at a distance from the position 0D, according to
The corresponding vertex lens power of different distance is adjusted, and until adjusting until suitable vertex lens power, measurement accuracy is high.
If measurement no to scale, can also on expanding lens hanger 2 the optometrys mirror such as placement ± 5D, ± 10D, ± 15D, ± 20D
Piece group expands bigger concave-sphere vertex lens power range, then cooperates the utility model -5D~+5D concave-sphere vertex lens power variation, and realization is covered
The high-acruracy survey of lid gamut range, strong applicability have accomplished only to need one simulated eye of the utility model that can replace existing
Multiple standard simulation eye equipment, cost reduces while being convenient for carrying.
Claims (8)
1. convenient for adjusting the Objective model eye of vertex lens power characterized by comprising pedestal, thereon parallel installation from front to back
There are plano-convex lens, diffuse reflecting screen, aperture diaphragm is installed in front of plano-convex lens；Regulating device is mounted in pedestal, for adjusting
Save the distance between diffuse reflecting screen and plano-convex lens.
2. the Objective model eye according to claim 1 convenient for adjusting vertex lens power, which is characterized in that the regulating device
For adjusting the position of diffuse reflecting screen or plano-convex lens.
3. the Objective model eye according to claim 1 convenient for adjusting vertex lens power, which is characterized in that the plano-convex is saturating
Mirror, diffuse reflecting screen pass through first support, second support installation on the base respectively, and regulating device is by adjusting first support or the
The positions of two brackets adjusts the distance between diffuse reflecting screen and plano-convex lens.
4. the Objective model eye according to claim 3 convenient for adjusting vertex lens power, which is characterized in that on the pedestal also
It is provided with graduated guide rail, the regulating device is used to adjust first support or second support moves on guide rail.
5. the Objective model eye according to claim 4 convenient for adjusting vertex lens power, which is characterized in that when the adjusting fills
It sets and is moved on guide rail for adjusting first support, then auxiliary scale is set in first support, or when the regulating device is used
In adjusting second support when moving on guide rail, then auxiliary scale is set on the secondary support bracket；Using the scale on guide rail as main scale, cooperation
Auxiliary scale forms vernier caliper structure.
6. the Objective model eye according to claim 4 convenient for adjusting vertex lens power, which is characterized in that the regulating device
It is mounted in pedestal including turntable and the rotating member being connect with turntable, rotating member, rotating member is equipped with the first helicitic texture, right
The first support or second support answered are equipped with the second helicitic texture being meshed with the first helicitic texture.
7. according to the described in any item Objective model eyes convenient for adjusting vertex lens power of claim 3 to 6, which is characterized in that institute
It states first support and/or second support is three-dimensional adjustable shelf.
8. the Objective model eye according to any one of claims 1 to 6 convenient for adjusting vertex lens power, which is characterized in that
The expansion lens hanger for placing plano-convex lens is also equipped in front of aperture diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721744849.5U CN208351782U (en) | 2017-12-14 | 2017-12-14 | Convenient for adjusting the Objective model eye of vertex lens power |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721744849.5U CN208351782U (en) | 2017-12-14 | 2017-12-14 | Convenient for adjusting the Objective model eye of vertex lens power |
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| CN208351782U true CN208351782U (en) | 2019-01-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107978212A (en) * | 2017-12-14 | 2018-05-01 | 广东省医疗器械质量监督检验所 | Easy to adjust the Objective model eye of vertex lens power |
-
2017
- 2017-12-14 CN CN201721744849.5U patent/CN208351782U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107978212A (en) * | 2017-12-14 | 2018-05-01 | 广东省医疗器械质量监督检验所 | Easy to adjust the Objective model eye of vertex lens power |
| CN107978212B (en) * | 2017-12-14 | 2024-03-22 | 广东省医疗器械质量监督检验所 | Objective type simulation eye convenient for adjusting top focal power |
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